55501423251 has 16 divisors (see below), whose sum is σ = 79683004800. Its totient is φ = 34234176128.

The previous prime is 55501423247. The next prime is 55501423259. The reversal of 55501423251 is 15232410555.

It is a cyclic number.

It is not a de Polignac number, because 55501423251 - 2² = 55501423247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55501423259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9219561 + ... + 9225578.

It is an arithmetic number, because the mean of its divisors is an integer number (4980187800).

Almost surely, 2^55501423251 is an apocalyptic number.

55501423251 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

55501423251 is a deficient number, since it is larger than the sum of its proper divisors (24181581549).

55501423251 is a wasteful number, since it uses less digits than its factorization.

55501423251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18445218.

The product of its (nonzero) digits is 30000, while the sum is 33.

The spelling of 55501423251 in words is "fifty-five billion, five hundred one million, four hundred twenty-three thousand, two hundred fifty-one".